Space heater construction



June Z6, 1956 A. H. CRONE 2,752,126

SPACE HEATER CONSTRUCTION Filed May 13, 1955 am l i g/ 72km M M4K,

nited rates Patent SPACE MATER CoNsrRUCTIoN Albert H. Crone, Rockford, Ill., assignor to Geo. D. Roper Corporation, Rockford, Hl., a corporation oi Illinois f Application May 13, 1953, Serial No. 354,793

2 Claims. (Cl. 257-151) This invention relates to a space heater construction, and has particular reference to a space heater of the type employing a gas burner and intended for assembly on a gas stove for heating the kitchen where the stove is situated.

Itis an object of this invention to provide a novel and improved space heater construction adapting the heater for high eiliciency operation.

Heretofore, in heaters of this general type the general practice has been to attempt to store the greatest amount of heat possible within a radiator and to rely on this to heat the air outside the radiator suiiciently for the heater to be effective for its intended purpose. However, no particular consideration was given to the paths followed within the radiator by the hot products of combustion from the gas burner, so as to render these products of combustion most eective to heat the wall areas of the radiator exposed to the outside air to be heated.

In the present invention, the hot products of combustion from the gas burner are directed within the radiator to sweep along a greater area of the outer side walls of the radiator, with part of the products of combustion sweeping over substantially all of the radiator wall areas exposed at their outer faces to the air to be heated. With this arrangement, the air passing along the outer side wall surfaces of the radiator is heated quickly and efficiently and the overall heat transfer characteristics of the heater are greatly improved.

It is, therefore, another object of the present invention to provide a novel heater construction in which hot products of combustion are ddrected within the radiator across a maximum of the radiator wall area which is exposed at its outer surface to the air to be heated.

Also, it is an object of this invention to provide a novel heater construction in which part of the products of combustion from a gas heater which ow up one side of the radiator are directed to then pass up the other side of the radiator before being discharged from the radiator, thus extracting an increased amount of heat from these products of combustion before they are discharged.

Other and further objects of the present invention will be apparent from the following description of a preferred embodiment thereof, illustrated in the accompanying drawing.

In the drawing:

Figure l is a fragmentary perspective View of a stove which incorporates the space heater of the present invention;

Figure 2 is a top plan view, partly broken away, showing the radiator construction in the present heater;

Figure 3 is a longitudinal elevational view of the present heater, partly broken away to better illustrate details of its construction; and

Figure 4 is an end view, partly broken away, of the heater.

Referring to the drawings, in the present heater assembly there is provided a conventional elongated gas burner having a series of upwardly directed ame ports 11,

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12 on either side along its length. The burner is located at the lower end of a radiator having a bottom opening 13 along its length for admitting air to ilow up past the burner.

'Ihe radiator body is in the form of two cast sections 14 and 15, of cast iron or cast aluminum, which are bolted together at their interface 16, which extends lengthwise from one end of the radiator to the other substantially along the centerline thereof.

'Ihe casting 15 of the radiator body has an upwardly extending side wall 17 which is flat at its inner face throughout substantially its entire extent, including a lower portion 18 which inclines outward and upward at a slight angle and a vertical portion 19 extending upward therefrom. At its upper end the side wall 17 merges smoothly with the curved top wall 20 of this casting of the radiator body, this top wall being generally sinuous longitudinally of the radiator and providing a plurality of channels 21. A plurality of outwardly projecting heat-radiating fins 22 are provided which extend continuously across the top wall and down along the side Wall of the radiator body casting 15, terminating somewhat above the bottom of the radiator body. At one end the casing 15 of the radiator body is formed with an integral discharge mouth 24 positioned just higher than the juncture between the inclined and vertical surfaces 1S and 19 of the side wall 17 and located about one-third of the way down from the top of the radiator body.

The other casting 14 of the radiator body has an outer side wail formed by a plurality of substantially at segments 25 which are interconnected by outwardly protruding channel-shaped segments 26 which provide a plurality of channels 27. The ilat wall segments 2S ineline inwardly in a direction upward along the radiator body, while the channel-shaped segments 26 incline outwardly in an upward direction, so that the channels 27 increase in depth upward along the radiator body. Both the ilat and channel-shaped portions of the side wall merge smoothly with respective portions of the curved top wall. This top wall has a shruous shape longitudinally of the radiator body, substantially identical to the shape of the top wall Ztl of the other body casting 15 of the radiator and provides a plurality of spaced, inwardly disposed segments 28, forming continuations of the dat side wall segments 25, and spaced channel-shaped segments, which form continuations of the side wall channel-shaped segments 26 and which define channels 29 receiving the products of combustion rising up the passages 27. These top channels 29 in the radiator body casting communicate with respective ones of the channels 21 in the top wall 20 of the other radiator body casting 15. A plurality of outwardly protruding, heat radiating ns 3@ extend down along the top and side walls of casting le of the radiator body.

For directing certain of the flows of the hot products of combustion in the radiator body there is provided a sheet metal baille (Fig. 4) of irregular configuration including a tiat, upwardly extending portion 31 directly underlying the upper portions of the ilat, inwardly disposed, side wall segments 25 of the radiator body casting 14, a curved top portion 32 directly underlyu'ng the inwardly disposed segments of the curved top wall 28 of radiator body casting 14 which separate the channels 29 therein, the flat, substantially horizontal portion 33 which directly underlies the inwardly disposed segments of the top wall 20 of radiator body casting 15 which separate the channels 21, a vertical section 34 extending in spaced parallel relation to the vertical section 19 of the side wall 17 of radiator body casting 14 and a horizontal portion 35 extending across for attachment at its upstanding ange 36 to the vertical section 19 of the side wall 17. From the drawings, it will be apparent that the baie Sl-Strextends Y underlies the lowermost segments ofthe sinuous top wall 2G Yof the radiator body casting iS, separates the respective topl channels 2l therein andy requires Vthe heated products of combustionto iiow in separate streams therethrough from the separate top channels 29 in the other radiator body casting 1d. Since Vthe discharge outlet 24 communicates with the space between the sinuous top wall 20 and the vertical portion i9 of the side wall of the radiator body casting i5, on one hand, and the bale wall portions 34-36, on the other hand, all ofthe Vtop channels 2l in the radiatorbody casting 15 communi- Vcate with the discharge outlet to passthe heated prod-V ucts of combustion thereto. The baffle is suitably secured to thc respective body sections of the radiator, as by screws 37. Since the baiiie extends the entire length of the radiator body, it limits the upward dow of the heated products of combustion Vwithin the chamber 15a and along the side wall i7 and directs these productsV of combustion over to the channeis 27 at the other side of the radiator body. Y

In the vuse of this heater, the radiator is mounted within a compartment at one end of the stove du, which has outlet di for heated air in its end wall d2. n The radiator has its side wall T17 closest to the Vend wall 42 of the stove. Gas is supplied to the burner l@ from a conduit d3; The bottom ofthe radiator is located several inches off the nectcd to the outlet 24 forV passing the products of combustion out of Ythe kitchen.

In operation, with the gas burner l@ lighted, air ows up past the burner on opposite sides thereof to provide secondary air supporting combustion at the burner. The

Vheated products of combustion from the burner then pass exhausted through the stack 44. The remainder of the heated products of combustion from the burner, which initialiy pass up into the other radiator body casting 15, are deflected by the baffle plate '3l- 36 after sweeping across the inclined lower portion l of the sidewall 1'7,

and are directed to the channels 27 at the opposite outerV side wall of the radiator body, from which they follow theV above-described path to the stack d4.. he air outside the radiator body sweeps up along the outside Vof the radiator ccd3/'upward along both sides thereof and across the top Vto the heated air discharge openings /t in the stove end wall 42.' Normaliy, suiiicient air ow occurs in this mannerrdue to the inherent stack action of the heater, with the air rising along the outside of the heater and passing out the openings l, without the necessity of Vproviding'a blower to force air past the radiator body.

FromV the foregoing it will be that with disclosed construction of the present invention, the heated Vproducts of combustion aredirected ina positive manner these radiator walls rapidly and etfectively. inrraddition a portion of the heated products of combustion ,are directed to sweep across both sides Yand the top of the A discharge stack 44 is con- Y Y Y d radiator body before being discharged therefrom, so that an increased amount of heat is extracted from Vthese products of combustion for heating the wall area of thc radiator body exposed to the outside air Vto be heated.Y

While in the foregoing descriptionand in the accompartying drawing there is disclosed a particular preferred embodiment of the present invention, it isfto be understood that various modiiications, omissions and refine ments which depart from the disclosed embodiment of the invention may be adopted without departing from the spirit andV scope ofthe present invention.

l claim: V Y

l. A heat radiator comprising a pair of castings secured together at abutting interfaces and formed with internal chambers which communicate with one another at the abutting interfaces of the castings, one'of said castings having an upwardly extending outer side wall providing a pluralityV of upwardly extending channels communicating with the chamber in said casting, saidV one casting having a top wall of sinuous configuration defining a plurality of top Achannels.communicating re'-v spectively with said upwardly extending channels and forming continuations of said upwardly extending Ychannels and extending across the top of said internal chamberV in said casting, the other of said castings having a sub- Y stantially flat upwardly extending side wall at said charnber therein, a heated, products inlet Vcommunicating with said chambers adjacent thebottom'thereof, said `other casting having a top wah of sinuous configuration yex-V upwardly extending side wall thereof and `directly :underlying the inner face of the lowermosty segments of said top Wall of'said one casting'to separate the upwardly extending channels from one another and to separate. the top channels in said one casting from one another torequire heated products to pass in separate Hows up through said upwardly extending channels and through said top channels in said one casting, said baiile terminatinglabove the lower end of the'side wall of said one casting whereby the heated products may pass from said chambers into the upwardly extending channels in said oneV casting adjacent the lower ends thereof, said baile overlying the VtopV of the chamber in said other casting and directly underlying the inner face of the lowermost segments of said top wall of said other casting to separate the top channels in said other casting, said baie extending downwardly from said top wail of said other casting and across said chamber in saidother casting in spaced relation Vto the'top wall thereof into engagement with said side wall of the other casing to form a heated products outletV passage therewith and to limit the i'low of heated products upward alongsaid sidewall of the other casting and to direct said heated'products across to the chamber in said one casting to pass into saidseparate upwardly extendinl7 channels in said one casting for separate flows other casting in communication with said heated products outlet passage. r

V2. A heat radiator comprising a pair of castings formedV with mating flanges along Vthe top and ends thereof, fasteners securing vsaid sectionstogether with the flangeswthereon 'Y in abutting relation to define an internal chamber having an open bottom forming a heated products inlet, one of said'cast-ings having a side wall extending upwardly and inwardly, said side wall havinga plurality of upwardly VextendingV channels formedtherein of progressively increasing depth fromrthe bottom to the top thereof lwith the apexes of the channels defining a plane whchfdiverges outwardly from said side wall, `said channels being spaced apart lengthwise of said one casting and communieating with said chamber, said one casting having a top Wall of sinuous configuration dening a plurality of horizontally extending channels forming continuations of said upwardly extending channels, the other casting having a substantially at side Wall extending upwardly and outwardly and a top Wall of sinuous configuration extending across the top of said chamber and dening a plurality of channels communicating with the channels in the top wall of said one casting and forming continuations thereof, said other casting having a heated products outlet opening in the end thereof below the channels in the top wall, a bae formed of a single piece and secured to said side Wall in said one casting intermediate the upper and lower ends thereof and extending upwardly along said side wall 15 said baffle extending downwardly from the top wall in spaced relation to the side Wall in the other casting and horizontally across the chamber into engagement with the side wall in said other casting to define a heated products passage therewith and to limit the ow of heated products upward along said side Wall in the other casting and to direct the heated products owing along the side Wall in said other casting across the chamber into the upwardly extending channels in said one casting, and means for securing said baie to the side Walls of each of said castings.

References Cited in the le of this patent UNITED STATES PATENTS 940,789 Coulston Nov. 23, 1909 1,343,634 Manker June l5, 1920 1,939,602 Suppes Dec. 12, 1933 2,157,643 Westwick May 9, 1939 2,403,189 McCollum July 2, 1946 

